19980304

素因数分解:

$2^4\times {\mathrm{17}}^2\times {\mathrm{29}}^1\times {\mathrm{149}}^1$

素因数の和:220

約数の個数: 60

約数和(自身を含む): 42826500

約数和(自身を除く): 22846196

約数列:

[1, 2, 4, 8, 16, 17, 29, 34, 58, 68, 116, 136, 149, 232, 272, 289, 298, 464, 493, 578, 596, 986, 1156, 1192, 1972, 2312, 2384, 2533, 3944, 4321, 4624, 5066, 7888, 8381, 8642, 10132, 16762, 17284, 20264, 33524, 34568, 40528, 43061, 67048, 69136, 73457, 86122, 134096, 146914, 172244, 293828, 344488, 587656, 688976, 1175312, 1248769, 2497538, 4995076, 9990152, 19980304]

約数ペア:

[(1, 19980304), (2, 9990152), (4, 4995076), (8, 2497538), (16, 1248769), (17, 1175312), (29, 688976), (34, 587656), (58, 344488), (68, 293828), (116, 172244), (136, 146914), (149, 134096), (232, 86122), (272, 73457), (289, 69136), (298, 67048), (464, 43061), (493, 40528), (578, 34568), (596, 33524), (986, 20264), (1156, 17284), (1192, 16762), (1972, 10132), (2312, 8642), (2384, 8381), (2533, 7888), (3944, 5066), (4321, 4624)]